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诱变育种提高乳酸乳球菌Lactococcus lactis产Nisin的能力 被引量:1

Induced Mutation Breeding to Improve Nisin Production Ability by Lactococcus lactis
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摘要 为了获得高产细菌素的乳酸乳球菌菌株,通过采用紫外线(UV)、亚硝基胍(NTG)、硫酸二乙酯(DES)诱变和紫外线与硫酸二乙酯复合诱变的方法,获得多株诱变菌株,研究突变株代谢生产Nisin的效价及抑菌能力。结果表明,其中通过诱变得到了一株高产菌株DU101,该菌株代谢生产Nisin的效价由442 IU/m L提高到了1386 IU/m L,约是原始菌株HDBR-06的3.14倍。通过传代试验验证了菌株的遗传性能稳定。 In this research, the highly Nisin-producing mutant strain DU101 was obtained from HDBR-06 by series of mutagenetic treatment, UV mutagenesis, nitrosoguanidine mutation, diethyl sulfate mutagenesis and ultraviolet (UV) and diethyl sulfate composite mutagenesis. The activity of Nisin of DU 101 was enhanced from 442 IU/mL to 1389IU/mL, which was 3.14 times as much as that of the initial strain HDBR-06. The subculture test proved that the hereditary character of strain DU 101 was stable.
出处 《中国农学通报》 2015年第24期173-178,共6页 Chinese Agricultural Science Bulletin
基金 国家自然科学基金"表达IBDV主要保护性抗原的重组杆状病毒构建及其作为疫苗效果研究"(31270143) 国家自然科学基金"菌群演替与温水沤麻系统关键酶产生菌代谢组学特征的耦合机制"(31270534) 国家自然科学基金"副干酪乳杆菌与枯草芽孢杆菌等菌群种间关系以及协同合作策略的研究"(31470537) 国家自然科学基金青年科学基金项目"酸菜发酵生态系统中细菌群落与代谢物组特征耦合机制"(31300355) 黑龙江省高等学校科技创新团队"农业微生物发酵技术"(2012td009)
关键词 乳酸乳球菌 乳链菌肽 诱变育种 Lactococcus lactis Nisin mutation breeding
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